| GBCF.java |
1 /*
2 * Copyright 2005 Paul Hinds
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package org.tp23.gui;
17
18import java.awt.GridBagConstraints;
19import java.awt.Insets;
20/**
21 * GBCF Grib Bag Constraints Factory. This class exists mostly
22 * for tidying up code that used the exsivly verbose GridBagConstraints
23 * object, hence the shortened class name.
24 * By default a two column equal with table is assumed, to support other
25 * column layouts use the constructor that take an array of column wieghts
26 * Factory class for generating constraints for a equal width column table.
27 * the table is similar to the following table rendered in HTML
28 * <table border="2">
29 * <tr>
30 * <td>data</td><td>data</td>
31 * </tr>
32 * <tr>
33 * <td colspan="2">data</td>
34 * </tr>
35 * <tr>
36 * <td>data</td><td>data</td>
37 * </tr>
38 * <tr>
39 * <td>data</td><td>data</td>
40 * </tr>
41 * <table>
42 * @author not attributable
43 * @version 1.0
44 */
45public class GBCF {
46
47 protected Insets insets = new Insets(1,4,1,4);
48 protected Insets noinsets = new Insets(0,0,0,0);
49 protected double[] columnWeights= new double[]{0.5,0.5};
50
51 public GBCF(){
52
53 }
54 /**
55 * to support more than two columns or vary the column wieghtings
56 * @param columnWeights double[]
57 */
58 public GBCF(double[] columnWeights){
59 this.columnWeights=columnWeights;
60 }
61 /**
62 *
63 * @param row int the 0 indexed row
64 * @param col int the 0 indexed column
65 * @param span boolean does cell span both columns
66 * @return GridBagConstraints
67 */
68 public GridBagConstraints getCell(int row,int col){
69 return new GridBagConstraints(col, //gridx
70 row, //gridy
71 1, //gridwidth
72 1, //gridheight
73 columnWeights[col],//weightx
74 0.0, //weithty
75 GridBagConstraints.WEST, // anchor
76 GridBagConstraints.NONE, //fill
77 insets, // insets
78 1, //ipadx
79 1 //ipady
80 );
81 }
82 /**
83 *
84 * @param row int the 0 indexed row
85 * @param first boolean is this the first column or the second
86 * @param span boolean does cell span both columns
87 * @return GridBagConstraints
88 */
89 public GridBagConstraints getSpan(int row){
90 return new GridBagConstraints(0, //gridx
91 row, //gridy
92 2, //gridwidth
93 1, //gridheight
94 columnWeights[0],//weightx
95 0.0, //weithty
96 GridBagConstraints.WEST, // anchor
97 GridBagConstraints.NONE, //fill
98 insets, // insets
99 1, //ipadx
00 1 //ipady
01 );
02 }
03 public GridBagConstraints getVertGlue(int row){
04 return new GridBagConstraints(0, //gridx
05 row, //gridy
06 2, //gridwidth
07 1, //gridheight
08 columnWeights[0],//weightx
09 1.0, //weithty
10 GridBagConstraints.NORTHWEST, // anchor
11 GridBagConstraints.NONE, //fill
12 noinsets, // insets
13 0, //ipadx
14 0 //ipady
15 );
16 }
17}
18